<template>
   <section class="main">
      <input id="toggle-all" class="toggle-all" type="checkbox" @click="allselect(!allstyle)" :checked='allstyle' />
      <label for="toggle-all" >Mark all as complete</label>
      <ul class="todo-list">
        <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
        <li :class="{completed : item.state}" v-for="item in list" :key="item.id">
          <div class="view">
            <input class="toggle" type="checkbox" :checked='item.state' @change="stylealter(item.id)"/>
            <label>{{item.task}}</label>
            <button class="destroy" @click="deletetask(item.id)"></button>
          </div>
        </li>
      </ul>
    </section>
</template>

<script>
export default {
  name: 'MyBody',
 props :{
  list :{
    type : Array,
  }
 },
 methods : {
  stylealter(id){
    this.$emit('stylealter' , id)
  },
  deletetask(id){
    this.$emit('deletetask' , id);
  },
  allselect(style){
   this.$emit('allselect' , style)
  }
 },
 computed :{
  allstyle(){
   return  this.list.every(item => item.state)
  }
 }
}
</script>

<style scoped lang="less"></style>